IoBuffer (com.sequoiadb:sequoiadb-driver 1.12 API)

java.lang.Object
- org.apache.mina.core.buffer.IoBuffer

所有已实现的接口:

Comparable<IoBuffer>

直接已知子类:

AbstractIoBuffer, IoBufferWrapper
```
public abstract class IoBuffer
extends Object
implements Comparable<IoBuffer>
```
A byte buffer used by MINA applications.
This is a replacement for ByteBuffer. Please refer to ByteBuffer documentation for preliminary usage. MINA does not use NIO ByteBuffer directly for two reasons:
- It doesn't provide useful getters and putters such as fill, get/putString, and get/putAsciiInt() enough.
- It is difficult to write variable-length data due to its fixed capacity
Allocation

You can allocate a new heap buffer.
```
 IoBuffer buf = IoBuffer.allocate(1024, false);
 
```
you can also allocate a new direct buffer:
```
 IoBuffer buf = IoBuffer.allocate(1024, true);
 
```
or you can set the default buffer type.
```
 // Allocate heap buffer by default.
 IoBuffer.setUseDirectBuffer(false);
 // A new heap buffer is returned.
 IoBuffer buf = IoBuffer.allocate(1024);
 
```
Wrapping existing NIO buffers and arrays

This class provides a few wrap(...) methods that wraps any NIO buffers and byte arrays.
AutoExpand

Writing variable-length data using NIO ByteBuffers is not really easy, and it is because its size is fixed. IoBuffer introduces autoExpand property. If autoExpand property is true, you never get BufferOverflowException or IndexOutOfBoundsException (except when index is negative). It automatically expands its capacity and limit value. For example:
```
 String greeting = messageBundle.getMessage("hello");
 IoBuffer buf = IoBuffer.allocate(16);
 // Turn on autoExpand (it is off by default)
 buf.setAutoExpand(true);
 buf.putString(greeting, utf8encoder);
 
```
The underlying ByteBuffer is reallocated by IoBuffer behind the scene if the encoded data is larger than 16 bytes in the example above. Its capacity will double, and its limit will increase to the last position the string is written.

AutoShrink

You might also want to decrease the capacity of the buffer when most of the allocated memory area is not being used. IoBuffer provides autoShrink property to take care of this issue. If autoShrink is turned on, IoBuffer halves the capacity of the buffer when compact() is invoked and only 1/4 or less of the current capacity is being used.
You can also shrink() method manually to shrink the capacity of the buffer.
The underlying ByteBuffer is reallocated by IoBuffer behind the scene, and therefore buf() will return a different ByteBuffer instance once capacity changes. Please also note compact() or shrink() will not decrease the capacity if the new capacity is less than the minimumCapacity() of the buffer.
Derived Buffers

Derived buffers are the buffers which were created by duplicate(), slice(), or asReadOnlyBuffer(). They are useful especially when you broadcast the same messages to multiple IoSessions. Please note that the buffer derived from and its derived buffers are not both auto-expandable neither auto-shrinkable. Trying to call setAutoExpand(boolean) or setAutoShrink(boolean) with true parameter will raise an IllegalStateException.

Changing Buffer Allocation Policy

IoBufferAllocator interface lets you override the default buffer management behavior. There are two allocators provided out-of-the-box:
- SimpleBufferAllocator (default)
- CachedBufferAllocator
You can implement your own allocator and use it by calling setAllocator(IoBufferAllocator).
作者:

Apache MINA Project

构造器概要

构造器
限定符构造器和说明

protected IoBuffer()
Creates a new instance.

构造器
限定符	构造器和说明
`protected`	`IoBuffer()` Creates a new instance.

方法概要

方法
限定符和类型	方法和说明
`static IoBuffer`	`allocate(int capacity)` Returns the direct or heap buffer which is capable to store the specified amount of bytes.
`static IoBuffer`	`allocate(int capacity, boolean direct)` Returns the buffer which is capable of the specified size.
`abstract byte[]`	`array()`
`abstract int`	`arrayOffset()`
`abstract CharBuffer`	`asCharBuffer()`
`abstract DoubleBuffer`	`asDoubleBuffer()`
`abstract FloatBuffer`	`asFloatBuffer()`
`abstract InputStream`	`asInputStream()` Returns an `InputStream` that reads the data from this buffer.
`abstract IntBuffer`	`asIntBuffer()`
`abstract LongBuffer`	`asLongBuffer()`
`abstract OutputStream`	`asOutputStream()` Returns an `OutputStream` that appends the data into this buffer.
`abstract IoBuffer`	`asReadOnlyBuffer()`
`abstract ShortBuffer`	`asShortBuffer()`
`abstract ByteBuffer`	`buf()` Returns the underlying NIO buffer instance.
`abstract int`	`capacity()`
`abstract IoBuffer`	`capacity(int newCapacity)` Increases the capacity of this buffer.
`abstract IoBuffer`	`clear()`
`abstract IoBuffer`	`compact()`
`abstract IoBuffer`	`duplicate()`
`abstract IoBuffer`	`expand(int expectedRemaining)` Changes the capacity and limit of this buffer so this buffer get the specified `expectedRemaining` room from the current position.
`abstract IoBuffer`	`expand(int position, int expectedRemaining)` Changes the capacity and limit of this buffer so this buffer get the specified `expectedRemaining` room from the specified `position`.
`abstract IoBuffer`	`fill(byte value, int size)` Fills this buffer with the specified value.
`abstract IoBuffer`	`fill(int size)` Fills this buffer with `NUL (0x00)`.
`abstract IoBuffer`	`fillAndReset(byte value, int size)` Fills this buffer with the specified value.
`abstract IoBuffer`	`fillAndReset(int size)` Fills this buffer with `NUL (0x00)`.
`abstract IoBuffer`	`flip()`
`abstract void`	`free()` Declares this buffer and all its derived buffers are not used anymore so that it can be reused by some `IoBufferAllocator` implementations.
`abstract byte`	`get()`
`abstract IoBuffer`	`get(byte[] dst)`
`abstract IoBuffer`	`get(byte[] dst, int offset, int length)`
`abstract byte`	`get(int index)`
`static IoBufferAllocator`	`getAllocator()` Returns the allocator used by existing and new buffers
`abstract char`	`getChar()`
`abstract char`	`getChar(int index)`
`abstract double`	`getDouble()`
`abstract double`	`getDouble(int index)`
`abstract <E extends Enum<E>> E`	`getEnum(Class<E> enumClass)` Reads a byte from the buffer and returns the correlating enum constant defined by the specified enum type.
`abstract <E extends Enum<E>> E`	`getEnum(int index, Class<E> enumClass)` Reads a byte from the buffer and returns the correlating enum constant defined by the specified enum type.
`abstract <E extends Enum<E>> E`	`getEnumInt(Class<E> enumClass)` Reads an int from the buffer and returns the correlating enum constant defined by the specified enum type.
`abstract <E extends Enum<E>> E`	`getEnumInt(int index, Class<E> enumClass)` Reads an int from the buffer and returns the correlating enum constant defined by the specified enum type.
`abstract <E extends Enum<E>> EnumSet<E>`	`getEnumSet(Class<E> enumClass)` Reads a byte sized bit vector and converts it to an `EnumSet`.
`abstract <E extends Enum<E>> EnumSet<E>`	`getEnumSet(int index, Class<E> enumClass)` Reads a byte sized bit vector and converts it to an `EnumSet`.
`abstract <E extends Enum<E>> EnumSet<E>`	`getEnumSetInt(Class<E> enumClass)` Reads an int sized bit vector and converts it to an `EnumSet`.
`abstract <E extends Enum<E>> EnumSet<E>`	`getEnumSetInt(int index, Class<E> enumClass)` Reads an int sized bit vector and converts it to an `EnumSet`.
`abstract <E extends Enum<E>> EnumSet<E>`	`getEnumSetLong(Class<E> enumClass)` Reads a long sized bit vector and converts it to an `EnumSet`.
`abstract <E extends Enum<E>> EnumSet<E>`	`getEnumSetLong(int index, Class<E> enumClass)` Reads a long sized bit vector and converts it to an `EnumSet`.
`abstract <E extends Enum<E>> EnumSet<E>`	`getEnumSetShort(Class<E> enumClass)` Reads a short sized bit vector and converts it to an `EnumSet`.
`abstract <E extends Enum<E>> EnumSet<E>`	`getEnumSetShort(int index, Class<E> enumClass)` Reads a short sized bit vector and converts it to an `EnumSet`.
`abstract <E extends Enum<E>> E`	`getEnumShort(Class<E> enumClass)` Reads a short from the buffer and returns the correlating enum constant defined by the specified enum type.
`abstract <E extends Enum<E>> E`	`getEnumShort(int index, Class<E> enumClass)` Reads a short from the buffer and returns the correlating enum constant defined by the specified enum type.
`abstract float`	`getFloat()`
`abstract float`	`getFloat(int index)`
`abstract String`	`getHexDump()` Returns hexdump of this buffer.
`abstract String`	`getHexDump(int lengthLimit)` Return hexdump of this buffer with limited length.
`abstract int`	`getInt()`
`abstract int`	`getInt(int index)`
`abstract long`	`getLong()`
`abstract long`	`getLong(int index)`
`abstract int`	`getMediumInt()` Relative get method for reading a medium int value.
`abstract int`	`getMediumInt(int index)` Absolute get method for reading a medium int value.
`abstract Object`	`getObject()` Reads a Java object from the buffer using the context `ClassLoader` of the current thread.
`abstract Object`	`getObject(ClassLoader classLoader)` Reads a Java object from the buffer using the specified `classLoader`.
`abstract String`	`getPrefixedString(CharsetDecoder decoder)` Reads a string which has a 16-bit length field before the actual encoded string, using the specified `decoder` and returns it.
`abstract String`	`getPrefixedString(int prefixLength, CharsetDecoder decoder)` Reads a string which has a length field before the actual encoded string, using the specified `decoder` and returns it.
`abstract short`	`getShort()`
`abstract short`	`getShort(int index)`
`abstract IoBuffer`	`getSlice(int length)` TODO document me.
`abstract IoBuffer`	`getSlice(int index, int length)` TODO document me.
`abstract String`	`getString(CharsetDecoder decoder)` Reads a `NUL`-terminated string from this buffer using the specified `decoder` and returns it.
`abstract String`	`getString(int fieldSize, CharsetDecoder decoder)` Reads a `NUL`-terminated string from this buffer using the specified `decoder` and returns it.
`abstract short`	`getUnsigned()` Reads one unsigned byte as a short integer.
`abstract short`	`getUnsigned(int index)` Reads one byte as an unsigned short integer.
`abstract long`	`getUnsignedInt()` Reads four bytes unsigned integer.
`abstract long`	`getUnsignedInt(int index)` Reads four bytes unsigned integer.
`abstract int`	`getUnsignedMediumInt()` Relative get method for reading an unsigned medium int value.
`abstract int`	`getUnsignedMediumInt(int index)` Absolute get method for reading an unsigned medium int value.
`abstract int`	`getUnsignedShort()` Reads two bytes unsigned integer.
`abstract int`	`getUnsignedShort(int index)` Reads two bytes unsigned integer.
`abstract boolean`	`hasArray()`
`abstract boolean`	`hasRemaining()`
`abstract int`	`indexOf(byte b)` Returns the first occurence position of the specified byte from the current position to the current limit.
`abstract boolean`	`isAutoExpand()` Returns `true` if and only if `autoExpand` is turned on.
`abstract boolean`	`isAutoShrink()` Returns `true` if and only if `autoShrink` is turned on.
`abstract boolean`	`isDerived()` returns `true` if and only if this buffer is derived from other buffer via `duplicate()`, `slice()` or `asReadOnlyBuffer()`.
`abstract boolean`	`isDirect()`
`abstract boolean`	`isReadOnly()`
`static boolean`	`isUseDirectBuffer()` Returns `true` if and only if a direct buffer is allocated by default when the type of the new buffer is not specified.
`abstract int`	`limit()`
`abstract IoBuffer`	`limit(int newLimit)`
`abstract IoBuffer`	`mark()`
`abstract int`	`markValue()` Returns the position of the current mark.
`abstract int`	`minimumCapacity()` Returns the minimum capacity of this buffer which is used to determine the new capacity of the buffer shrunk by `compact()` and `shrink()` operation.
`abstract IoBuffer`	`minimumCapacity(int minimumCapacity)` Sets the minimum capacity of this buffer which is used to determine the new capacity of the buffer shrunk by `compact()` and `shrink()` operation.
`protected static int`	`normalizeCapacity(int requestedCapacity)` Normalizes the specified capacity of the buffer to power of 2, which is often helpful for optimal memory usage and performance.
`abstract ByteOrder`	`order()`
`abstract IoBuffer`	`order(ByteOrder bo)`
`abstract int`	`position()`
`abstract IoBuffer`	`position(int newPosition)`
`abstract boolean`	`prefixedDataAvailable(int prefixLength)` Returns `true` if this buffer contains a data which has a data length as a prefix and the buffer has remaining data as enough as specified in the data length field.
`abstract boolean`	`prefixedDataAvailable(int prefixLength, int maxDataLength)` Returns `true` if this buffer contains a data which has a data length as a prefix and the buffer has remaining data as enough as specified in the data length field.
`abstract IoBuffer`	`put(byte b)`
`abstract IoBuffer`	`put(byte[] src)`
`abstract IoBuffer`	`put(byte[] src, int offset, int length)`
`abstract IoBuffer`	`put(ByteBuffer src)` Writes the content of the specified `src` into this buffer.
`abstract IoBuffer`	`put(int index, byte b)`
`abstract IoBuffer`	`put(IoBuffer src)` Writes the content of the specified `src` into this buffer.
`abstract IoBuffer`	`putChar(char value)`
`abstract IoBuffer`	`putChar(int index, char value)`
`abstract IoBuffer`	`putDouble(double value)`
`abstract IoBuffer`	`putDouble(int index, double value)`
`abstract IoBuffer`	`putEnum(Enum<?> e)` Writes an enum's ordinal value to the buffer as a byte.
`abstract IoBuffer`	`putEnum(int index, Enum<?> e)` Writes an enum's ordinal value to the buffer as a byte.
`abstract IoBuffer`	`putEnumInt(Enum<?> e)` Writes an enum's ordinal value to the buffer as an integer.
`abstract IoBuffer`	`putEnumInt(int index, Enum<?> e)` Writes an enum's ordinal value to the buffer as an integer.
`abstract <E extends Enum<E>> IoBuffer`	`putEnumSet(int index, Set<E> set)` Writes the specified `Set` to the buffer as a byte sized bit vector.
`abstract <E extends Enum<E>> IoBuffer`	`putEnumSet(Set<E> set)` Writes the specified `Set` to the buffer as a byte sized bit vector.
`abstract <E extends Enum<E>> IoBuffer`	`putEnumSetInt(int index, Set<E> set)` Writes the specified `Set` to the buffer as an int sized bit vector.
`abstract <E extends Enum<E>> IoBuffer`	`putEnumSetInt(Set<E> set)` Writes the specified `Set` to the buffer as an int sized bit vector.
`abstract <E extends Enum<E>> IoBuffer`	`putEnumSetLong(int index, Set<E> set)` Writes the specified `Set` to the buffer as a long sized bit vector.
`abstract <E extends Enum<E>> IoBuffer`	`putEnumSetLong(Set<E> set)` Writes the specified `Set` to the buffer as a long sized bit vector.
`abstract <E extends Enum<E>> IoBuffer`	`putEnumSetShort(int index, Set<E> set)` Writes the specified `Set` to the buffer as a short sized bit vector.
`abstract <E extends Enum<E>> IoBuffer`	`putEnumSetShort(Set<E> set)` Writes the specified `Set` to the buffer as a short sized bit vector.
`abstract IoBuffer`	`putEnumShort(Enum<?> e)` Writes an enum's ordinal value to the buffer as a short.
`abstract IoBuffer`	`putEnumShort(int index, Enum<?> e)` Writes an enum's ordinal value to the buffer as a short.
`abstract IoBuffer`	`putFloat(float value)`
`abstract IoBuffer`	`putFloat(int index, float value)`
`abstract IoBuffer`	`putInt(int value)`
`abstract IoBuffer`	`putInt(int index, int value)`
`abstract IoBuffer`	`putLong(int index, long value)`
`abstract IoBuffer`	`putLong(long value)`
`abstract IoBuffer`	`putMediumInt(int value)` Relative put method for writing a medium int value.
`abstract IoBuffer`	`putMediumInt(int index, int value)` Absolute put method for writing a medium int value.
`abstract IoBuffer`	`putObject(Object o)` Writes the specified Java object to the buffer.
`abstract IoBuffer`	`putPrefixedString(CharSequence in, CharsetEncoder encoder)` Writes the content of `in` into this buffer as a string which has a 16-bit length field before the actual encoded string, using the specified `encoder`.
`abstract IoBuffer`	`putPrefixedString(CharSequence in, int prefixLength, CharsetEncoder encoder)` Writes the content of `in` into this buffer as a string which has a 16-bit length field before the actual encoded string, using the specified `encoder`.
`abstract IoBuffer`	`putPrefixedString(CharSequence val, int prefixLength, int padding, byte padValue, CharsetEncoder encoder)` Writes the content of `in` into this buffer as a string which has a 16-bit length field before the actual encoded string, using the specified `encoder`.
`abstract IoBuffer`	`putPrefixedString(CharSequence in, int prefixLength, int padding, CharsetEncoder encoder)` Writes the content of `in` into this buffer as a string which has a 16-bit length field before the actual encoded string, using the specified `encoder`.
`abstract IoBuffer`	`putShort(int index, short value)`
`abstract IoBuffer`	`putShort(short value)`
`abstract IoBuffer`	`putString(CharSequence val, CharsetEncoder encoder)` Writes the content of `in` into this buffer using the specified `encoder`.
`abstract IoBuffer`	`putString(CharSequence val, int fieldSize, CharsetEncoder encoder)` Writes the content of `in` into this buffer as a `NUL`-terminated string using the specified `encoder`.
`abstract IoBuffer`	`putUnsigned(byte value)` Writes an unsigned byte into the ByteBuffer
`abstract IoBuffer`	`putUnsigned(int value)` Writes an unsigned byte into the ByteBuffer
`abstract IoBuffer`	`putUnsigned(int index, byte value)` Writes an unsigned byte into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsigned(int index, int value)` Writes an unsigned byte into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsigned(int index, long value)` Writes an unsigned byte into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsigned(int index, short value)` Writes an unsigned byte into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsigned(long value)` Writes an unsigned byte into the ByteBuffer
`abstract IoBuffer`	`putUnsigned(short value)` Writes an unsigned byte into the ByteBuffer
`abstract IoBuffer`	`putUnsignedInt(byte value)` Writes an unsigned int into the ByteBuffer
`abstract IoBuffer`	`putUnsignedInt(int value)` Writes an unsigned int into the ByteBuffer
`abstract IoBuffer`	`putUnsignedInt(int index, byte value)` Writes an unsigned int into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsignedInt(int index, int value)` Writes an unsigned int into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsignedInt(int index, long value)` Writes an unsigned int into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsignedInt(int index, short value)` Writes an unsigned int into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsignedInt(long value)` Writes an unsigned int into the ByteBuffer
`abstract IoBuffer`	`putUnsignedInt(short value)` Writes an unsigned int into the ByteBuffer
`abstract IoBuffer`	`putUnsignedShort(byte value)` Writes an unsigned short into the ByteBuffer
`abstract IoBuffer`	`putUnsignedShort(int value)` Writes an unsigned Short into the ByteBuffer
`abstract IoBuffer`	`putUnsignedShort(int index, byte value)` Writes an unsigned Short into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsignedShort(int index, int value)` Writes an unsigned Short into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsignedShort(int index, long value)` Writes an unsigned Short into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsignedShort(int index, short value)` Writes an unsigned Short into the ByteBuffer at a specified position
`abstract IoBuffer`	`putUnsignedShort(long value)` Writes an unsigned Short into the ByteBuffer
`abstract IoBuffer`	`putUnsignedShort(short value)` Writes an unsigned Short into the ByteBuffer
`abstract int`	`remaining()`
`abstract IoBuffer`	`reset()`
`abstract IoBuffer`	`rewind()`
`static void`	`setAllocator(IoBufferAllocator newAllocator)` Sets the allocator used by existing and new buffers
`abstract IoBuffer`	`setAutoExpand(boolean autoExpand)` Turns on or off `autoExpand`.
`abstract IoBuffer`	`setAutoShrink(boolean autoShrink)` Turns on or off `autoShrink`.
`static void`	`setUseDirectBuffer(boolean useDirectBuffer)` Sets if a direct buffer should be allocated by default when the type of the new buffer is not specified.
`abstract IoBuffer`	`shrink()` Changes the capacity of this buffer so this buffer occupies as less memory as possible while retaining the position, limit and the buffer content between the position and limit.
`abstract IoBuffer`	`skip(int size)` Forwards the position of this buffer as the specified `size` bytes.
`abstract IoBuffer`	`slice()`
`abstract IoBuffer`	`sweep()` Clears this buffer and fills its content with `NUL`.
`abstract IoBuffer`	`sweep(byte value)` double Clears this buffer and fills its content with `value`.
`static IoBuffer`	`wrap(byte[] byteArray)` Wraps the specified byte array into MINA heap buffer.
`static IoBuffer`	`wrap(byte[] byteArray, int offset, int length)` Wraps the specified byte array into MINA heap buffer.
`static IoBuffer`	`wrap(ByteBuffer nioBuffer)` Wraps the specified NIO `ByteBuffer` into MINA buffer.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 java.lang.Comparable
compareTo

- 构造器详细资料
  - IoBuffer
```
protected IoBuffer()
```
    Creates a new instance. This is an empty constructor.
- 方法详细资料
  - getAllocator
```
public static IoBufferAllocator getAllocator()
```
    Returns the allocator used by existing and new buffers
  - setAllocator
```
public static void setAllocator(IoBufferAllocator newAllocator)
```
    Sets the allocator used by existing and new buffers
  - isUseDirectBuffer
```
public static boolean isUseDirectBuffer()
```
    Returns true if and only if a direct buffer is allocated by default when the type of the new buffer is not specified. The default value is false.
  - setUseDirectBuffer
```
public static void setUseDirectBuffer(boolean useDirectBuffer)
```
    Sets if a direct buffer should be allocated by default when the type of the new buffer is not specified. The default value is false.
  - allocate
```
public static IoBuffer allocate(int capacity)
```
    Returns the direct or heap buffer which is capable to store the specified amount of bytes.
    
    参数:
    capacity - the capacity of the buffer
    另请参阅:
    setUseDirectBuffer(boolean)
  - allocate
```
public static IoBuffer allocate(int capacity,
                boolean direct)
```
    Returns the buffer which is capable of the specified size.
    
    参数:
    capacity - the capacity of the buffer
    direct - true to get a direct buffer, false to get a heap buffer.
  - wrap
```
public static IoBuffer wrap(ByteBuffer nioBuffer)
```
    Wraps the specified NIO ByteBuffer into MINA buffer.
  - wrap
```
public static IoBuffer wrap(byte[] byteArray)
```
    Wraps the specified byte array into MINA heap buffer.
  - wrap
```
public static IoBuffer wrap(byte[] byteArray,
            int offset,
            int length)
```
    Wraps the specified byte array into MINA heap buffer.
  - normalizeCapacity
```
protected static int normalizeCapacity(int requestedCapacity)
```
    Normalizes the specified capacity of the buffer to power of 2, which is often helpful for optimal memory usage and performance. If it is greater than or equal to Integer.MAX_VALUE, it returns Integer.MAX_VALUE. If it is zero, it returns zero.
  - free
```
public abstract void free()
```
    Declares this buffer and all its derived buffers are not used anymore so that it can be reused by some IoBufferAllocator implementations. It is not mandatory to call this method, but you might want to invoke this method for maximum performance.
  - buf
```
public abstract ByteBuffer buf()
```
    Returns the underlying NIO buffer instance.
  - isDirect
```
public abstract boolean isDirect()
```
    另请参阅:
    ByteBuffer.isDirect()
  - isDerived
```
public abstract boolean isDerived()
```
    returns true if and only if this buffer is derived from other buffer via duplicate(), slice() or asReadOnlyBuffer().
  - isReadOnly
```
public abstract boolean isReadOnly()
```
    另请参阅:
    Buffer.isReadOnly()
  - minimumCapacity
```
public abstract int minimumCapacity()
```
    Returns the minimum capacity of this buffer which is used to determine the new capacity of the buffer shrunk by compact() and shrink() operation. The default value is the initial capacity of the buffer.
  - minimumCapacity
```
public abstract IoBuffer minimumCapacity(int minimumCapacity)
```
    Sets the minimum capacity of this buffer which is used to determine the new capacity of the buffer shrunk by compact() and shrink() operation. The default value is the initial capacity of the buffer.
  - capacity
```
public abstract int capacity()
```
    另请参阅:
    Buffer.capacity()
  - capacity
```
public abstract IoBuffer capacity(int newCapacity)
```
    Increases the capacity of this buffer. If the new capacity is less than or equal to the current capacity, this method returns silently. If the new capacity is greater than the current capacity, the buffer is reallocated while retaining the position, limit, mark and the content of the buffer.
  - isAutoExpand
```
public abstract boolean isAutoExpand()
```
    Returns true if and only if autoExpand is turned on.
  - setAutoExpand
```
public abstract IoBuffer setAutoExpand(boolean autoExpand)
```
    Turns on or off autoExpand.
  - isAutoShrink
```
public abstract boolean isAutoShrink()
```
    Returns true if and only if autoShrink is turned on.
  - setAutoShrink
```
public abstract IoBuffer setAutoShrink(boolean autoShrink)
```
    Turns on or off autoShrink.
  - expand
```
public abstract IoBuffer expand(int expectedRemaining)
```
    Changes the capacity and limit of this buffer so this buffer get the specified expectedRemaining room from the current position. This method works even if you didn't set autoExpand to true.
  - expand
```
public abstract IoBuffer expand(int position,
              int expectedRemaining)
```
    Changes the capacity and limit of this buffer so this buffer get the specified expectedRemaining room from the specified position. This method works even if you didn't set autoExpand to true.
  - shrink
```
public abstract IoBuffer shrink()
```
    Changes the capacity of this buffer so this buffer occupies as less memory as possible while retaining the position, limit and the buffer content between the position and limit. The capacity of the buffer never becomes less than minimumCapacity(). The mark is discarded once the capacity changes.
  - position
```
public abstract int position()
```
    另请参阅:
    Buffer.position()
  - position
```
public abstract IoBuffer position(int newPosition)
```
    另请参阅:
    Buffer.position(int)
  - limit
```
public abstract int limit()
```
    另请参阅:
    Buffer.limit()
  - limit
```
public abstract IoBuffer limit(int newLimit)
```
    另请参阅:
    Buffer.limit(int)
  - mark
```
public abstract IoBuffer mark()
```
    另请参阅:
    Buffer.mark()
  - markValue
```
public abstract int markValue()
```
    Returns the position of the current mark. This method returns -1 if no mark is set.
  - reset
```
public abstract IoBuffer reset()
```
    另请参阅:
    Buffer.reset()
  - clear
```
public abstract IoBuffer clear()
```
    另请参阅:
    Buffer.clear()
  - sweep
```
public abstract IoBuffer sweep()
```
    Clears this buffer and fills its content with NUL. The position is set to zero, the limit is set to the capacity, and the mark is discarded.
  - sweep
```
public abstract IoBuffer sweep(byte value)
```
    double Clears this buffer and fills its content with value. The position is set to zero, the limit is set to the capacity, and the mark is discarded.
  - flip
```
public abstract IoBuffer flip()
```
    另请参阅:
    Buffer.flip()
  - rewind
```
public abstract IoBuffer rewind()
```
    另请参阅:
    Buffer.rewind()
  - remaining
```
public abstract int remaining()
```
    另请参阅:
    Buffer.remaining()
  - hasRemaining
```
public abstract boolean hasRemaining()
```
    另请参阅:
    Buffer.hasRemaining()
  - duplicate
```
public abstract IoBuffer duplicate()
```
    另请参阅:
    ByteBuffer.duplicate()
  - slice
```
public abstract IoBuffer slice()
```
    另请参阅:
    ByteBuffer.slice()
  - asReadOnlyBuffer
```
public abstract IoBuffer asReadOnlyBuffer()
```
    另请参阅:
    ByteBuffer.asReadOnlyBuffer()
  - hasArray
```
public abstract boolean hasArray()
```
    另请参阅:
    ByteBuffer.hasArray()
  - array
```
public abstract byte[] array()
```
    另请参阅:
    ByteBuffer.array()
  - arrayOffset
```
public abstract int arrayOffset()
```
    另请参阅:
    ByteBuffer.arrayOffset()
  - get
```
public abstract byte get()
```
    另请参阅:
    ByteBuffer.get()
  - getUnsigned
```
public abstract short getUnsigned()
```
    Reads one unsigned byte as a short integer.
  - put
```
public abstract IoBuffer put(byte b)
```
    另请参阅:
    ByteBuffer.put(byte)
  - get
```
public abstract byte get(int index)
```
    另请参阅:
    ByteBuffer.get(int)
  - getUnsigned
```
public abstract short getUnsigned(int index)
```
    Reads one byte as an unsigned short integer.
  - put
```
public abstract IoBuffer put(int index,
           byte b)
```
    另请参阅:
    ByteBuffer.put(int, byte)
  - get
```
public abstract IoBuffer get(byte[] dst,
           int offset,
           int length)
```
    另请参阅:
    ByteBuffer.get(byte[], int, int)
  - get
```
public abstract IoBuffer get(byte[] dst)
```
    另请参阅:
    ByteBuffer.get(byte[])
  - getSlice
```
public abstract IoBuffer getSlice(int index,
                int length)
```
    TODO document me.
  - getSlice
```
public abstract IoBuffer getSlice(int length)
```
    TODO document me.
  - put
```
public abstract IoBuffer put(ByteBuffer src)
```
    Writes the content of the specified src into this buffer.
  - put
```
public abstract IoBuffer put(IoBuffer src)
```
    Writes the content of the specified src into this buffer.
  - put
```
public abstract IoBuffer put(byte[] src,
           int offset,
           int length)
```
    另请参阅:
    ByteBuffer.put(byte[], int, int)
  - put
```
public abstract IoBuffer put(byte[] src)
```
    另请参阅:
    ByteBuffer.put(byte[])
  - compact
```
public abstract IoBuffer compact()
```
    另请参阅:
    ByteBuffer.compact()
  - order
```
public abstract ByteOrder order()
```
    另请参阅:
    ByteBuffer.order()
  - order
```
public abstract IoBuffer order(ByteOrder bo)
```
    另请参阅:
    ByteBuffer.order(ByteOrder)
  - getChar
```
public abstract char getChar()
```
    另请参阅:
    ByteBuffer.getChar()
  - putChar
```
public abstract IoBuffer putChar(char value)
```
    另请参阅:
    ByteBuffer.putChar(char)
  - getChar
```
public abstract char getChar(int index)
```
    另请参阅:
    ByteBuffer.getChar(int)
  - putChar
```
public abstract IoBuffer putChar(int index,
               char value)
```
    另请参阅:
    ByteBuffer.putChar(int, char)
  - asCharBuffer
```
public abstract CharBuffer asCharBuffer()
```
    另请参阅:
    ByteBuffer.asCharBuffer()
  - getShort
```
public abstract short getShort()
```
    另请参阅:
    ByteBuffer.getShort()
  - getUnsignedShort
```
public abstract int getUnsignedShort()
```
    Reads two bytes unsigned integer.
  - putShort
```
public abstract IoBuffer putShort(short value)
```
    另请参阅:
    ByteBuffer.putShort(short)
  - getShort
```
public abstract short getShort(int index)
```
    另请参阅:
    ByteBuffer.getShort()
  - getUnsignedShort
```
public abstract int getUnsignedShort(int index)
```
    Reads two bytes unsigned integer.
  - putShort
```
public abstract IoBuffer putShort(int index,
                short value)
```
    另请参阅:
    ByteBuffer.putShort(int, short)
  - asShortBuffer
```
public abstract ShortBuffer asShortBuffer()
```
    另请参阅:
    ByteBuffer.asShortBuffer()
  - getInt
```
public abstract int getInt()
```
    另请参阅:
    ByteBuffer.getInt()
  - getUnsignedInt
```
public abstract long getUnsignedInt()
```
    Reads four bytes unsigned integer.
  - getMediumInt
```
public abstract int getMediumInt()
```
    Relative get method for reading a medium int value.
    Reads the next three bytes at this buffer's current position, composing them into an int value according to the current byte order, and then increments the position by three.
    
    返回:
    The medium int value at the buffer's current position
  - getUnsignedMediumInt
```
public abstract int getUnsignedMediumInt()
```
    Relative get method for reading an unsigned medium int value.
    Reads the next three bytes at this buffer's current position, composing them into an int value according to the current byte order, and then increments the position by three.
    
    返回:
    The unsigned medium int value at the buffer's current position
  - getMediumInt
```
public abstract int getMediumInt(int index)
```
    Absolute get method for reading a medium int value.
    Reads the next three bytes at this buffer's current position, composing them into an int value according to the current byte order.
    
    参数:
    index - The index from which the medium int will be read
    
    返回:
    The medium int value at the given index
    
    抛出:
    
    IndexOutOfBoundsException - If index is negative or not smaller than the buffer's limit
  - getUnsignedMediumInt
```
public abstract int getUnsignedMediumInt(int index)
```
    Absolute get method for reading an unsigned medium int value.
    Reads the next three bytes at this buffer's current position, composing them into an int value according to the current byte order.
    
    参数:
    index - The index from which the unsigned medium int will be read
    
    返回:
    The unsigned medium int value at the given index
    
    抛出:
    
    IndexOutOfBoundsException - If index is negative or not smaller than the buffer's limit
  - putMediumInt
```
public abstract IoBuffer putMediumInt(int value)
```
    Relative put method for writing a medium int value.
    Writes three bytes containing the given int value, in the current byte order, into this buffer at the current position, and then increments the position by three.
    
    参数:
    value - The medium int value to be written
    
    返回:
    This buffer
    
    抛出:
    
    BufferOverflowException - If there are fewer than three bytes remaining in this buffer
    
    ReadOnlyBufferException - If this buffer is read-only
  - putMediumInt
```
public abstract IoBuffer putMediumInt(int index,
                    int value)
```
    Absolute put method for writing a medium int value.
    Writes three bytes containing the given int value, in the current byte order, into this buffer at the given index.
    
    参数:
    index - The index at which the bytes will be written
    value - The medium int value to be written
    
    返回:
    This buffer
    
    抛出:
    
    IndexOutOfBoundsException - If index is negative or not smaller than the buffer's limit, minus three
    
    ReadOnlyBufferException - If this buffer is read-only
  - putInt
```
public abstract IoBuffer putInt(int value)
```
    另请参阅:
    ByteBuffer.putInt(int)
  - putUnsigned
```
public abstract IoBuffer putUnsigned(byte value)
```
    Writes an unsigned byte into the ByteBuffer
    
    参数:
    value - the byte to write
  - putUnsigned
```
public abstract IoBuffer putUnsigned(int index,
                   byte value)
```
    Writes an unsigned byte into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the byte to write
  - putUnsigned
```
public abstract IoBuffer putUnsigned(short value)
```
    Writes an unsigned byte into the ByteBuffer
    
    参数:
    value - the short to write
  - putUnsigned
```
public abstract IoBuffer putUnsigned(int index,
                   short value)
```
    Writes an unsigned byte into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the short to write
  - putUnsigned
```
public abstract IoBuffer putUnsigned(int value)
```
    Writes an unsigned byte into the ByteBuffer
    
    参数:
    value - the int to write
  - putUnsigned
```
public abstract IoBuffer putUnsigned(int index,
                   int value)
```
    Writes an unsigned byte into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the int to write
  - putUnsigned
```
public abstract IoBuffer putUnsigned(long value)
```
    Writes an unsigned byte into the ByteBuffer
    
    参数:
    value - the long to write
  - putUnsigned
```
public abstract IoBuffer putUnsigned(int index,
                   long value)
```
    Writes an unsigned byte into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the long to write
  - putUnsignedInt
```
public abstract IoBuffer putUnsignedInt(byte value)
```
    Writes an unsigned int into the ByteBuffer
    
    参数:
    value - the byte to write
  - putUnsignedInt
```
public abstract IoBuffer putUnsignedInt(int index,
                      byte value)
```
    Writes an unsigned int into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the byte to write
  - putUnsignedInt
```
public abstract IoBuffer putUnsignedInt(short value)
```
    Writes an unsigned int into the ByteBuffer
    
    参数:
    value - the short to write
  - putUnsignedInt
```
public abstract IoBuffer putUnsignedInt(int index,
                      short value)
```
    Writes an unsigned int into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the short to write
  - putUnsignedInt
```
public abstract IoBuffer putUnsignedInt(int value)
```
    Writes an unsigned int into the ByteBuffer
    
    参数:
    value - the int to write
  - putUnsignedInt
```
public abstract IoBuffer putUnsignedInt(int index,
                      int value)
```
    Writes an unsigned int into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the int to write
  - putUnsignedInt
```
public abstract IoBuffer putUnsignedInt(long value)
```
    Writes an unsigned int into the ByteBuffer
    
    参数:
    value - the long to write
  - putUnsignedInt
```
public abstract IoBuffer putUnsignedInt(int index,
                      long value)
```
    Writes an unsigned int into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the long to write
  - putUnsignedShort
```
public abstract IoBuffer putUnsignedShort(byte value)
```
    Writes an unsigned short into the ByteBuffer
    
    参数:
    value - the byte to write
  - putUnsignedShort
```
public abstract IoBuffer putUnsignedShort(int index,
                        byte value)
```
    Writes an unsigned Short into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the byte to write
  - putUnsignedShort
```
public abstract IoBuffer putUnsignedShort(short value)
```
    Writes an unsigned Short into the ByteBuffer
    
    参数:
    value - the short to write
  - putUnsignedShort
```
public abstract IoBuffer putUnsignedShort(int index,
                        short value)
```
    Writes an unsigned Short into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the short to write
  - putUnsignedShort
```
public abstract IoBuffer putUnsignedShort(int value)
```
    Writes an unsigned Short into the ByteBuffer
    
    参数:
    value - the int to write
  - putUnsignedShort
```
public abstract IoBuffer putUnsignedShort(int index,
                        int value)
```
    Writes an unsigned Short into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the int to write
  - putUnsignedShort
```
public abstract IoBuffer putUnsignedShort(long value)
```
    Writes an unsigned Short into the ByteBuffer
    
    参数:
    value - the long to write
  - putUnsignedShort
```
public abstract IoBuffer putUnsignedShort(int index,
                        long value)
```
    Writes an unsigned Short into the ByteBuffer at a specified position
    
    参数:
    index - the position in the buffer to write the value
    value - the long to write
  - getInt
```
public abstract int getInt(int index)
```
    另请参阅:
    ByteBuffer.getInt(int)
  - getUnsignedInt
```
public abstract long getUnsignedInt(int index)
```
    Reads four bytes unsigned integer.
    
    参数:
    index - the position in the buffer to write the value
  - putInt
```
public abstract IoBuffer putInt(int index,
              int value)
```
    另请参阅:
    ByteBuffer.putInt(int, int)
  - asIntBuffer
```
public abstract IntBuffer asIntBuffer()
```
    另请参阅:
    ByteBuffer.asIntBuffer()
  - getLong
```
public abstract long getLong()
```
    另请参阅:
    ByteBuffer.getLong()
  - putLong
```
public abstract IoBuffer putLong(long value)
```
    另请参阅:
    ByteBuffer.putLong(int, long)
  - getLong
```
public abstract long getLong(int index)
```
    另请参阅:
    ByteBuffer.getLong(int)
  - putLong
```
public abstract IoBuffer putLong(int index,
               long value)
```
    另请参阅:
    ByteBuffer.putLong(int, long)
  - asLongBuffer
```
public abstract LongBuffer asLongBuffer()
```
    另请参阅:
    ByteBuffer.asLongBuffer()
  - getFloat
```
public abstract float getFloat()
```
    另请参阅:
    ByteBuffer.getFloat()
  - putFloat
```
public abstract IoBuffer putFloat(float value)
```
    另请参阅:
    ByteBuffer.putFloat(float)
  - getFloat
```
public abstract float getFloat(int index)
```
    另请参阅:
    ByteBuffer.getFloat(int)
  - putFloat
```
public abstract IoBuffer putFloat(int index,
                float value)
```
    另请参阅:
    ByteBuffer.putFloat(int, float)
  - asFloatBuffer
```
public abstract FloatBuffer asFloatBuffer()
```
    另请参阅:
    ByteBuffer.asFloatBuffer()
  - getDouble
```
public abstract double getDouble()
```
    另请参阅:
    ByteBuffer.getDouble()
  - putDouble
```
public abstract IoBuffer putDouble(double value)
```
    另请参阅:
    ByteBuffer.putDouble(double)
  - getDouble
```
public abstract double getDouble(int index)
```
    另请参阅:
    ByteBuffer.getDouble(int)
  - putDouble
```
public abstract IoBuffer putDouble(int index,
                 double value)
```
    另请参阅:
    ByteBuffer.putDouble(int, double)
  - asDoubleBuffer
```
public abstract DoubleBuffer asDoubleBuffer()
```
    另请参阅:
    ByteBuffer.asDoubleBuffer()
  - asInputStream
```
public abstract InputStream asInputStream()
```
    Returns an InputStream that reads the data from this buffer. InputStream.read() returns -1 if the buffer position reaches to the limit.
  - asOutputStream
```
public abstract OutputStream asOutputStream()
```
    Returns an OutputStream that appends the data into this buffer. Please note that the OutputStream.write(int) will throw a BufferOverflowException instead of an IOException in case of buffer overflow. Please set autoExpand property by calling setAutoExpand(boolean) to prevent the unexpected runtime exception.
  - getHexDump
```
public abstract String getHexDump()
```
    Returns hexdump of this buffer. The data and pointer are not changed as a result of this method call.
    
    返回:
    hexidecimal representation of this buffer
  - getHexDump
```
public abstract String getHexDump(int lengthLimit)
```
    Return hexdump of this buffer with limited length.
    
    参数:
    lengthLimit - The maximum number of bytes to dump from the current buffer position.
    
    返回:
    hexidecimal representation of this buffer
  - getString
```
public abstract String getString(CharsetDecoder decoder)
                          throws CharacterCodingException
```
    Reads a NUL-terminated string from this buffer using the specified decoder and returns it. This method reads until the limit of this buffer if no NUL is found.
    
    抛出:
    
    CharacterCodingException
  - getString
```
public abstract String getString(int fieldSize,
               CharsetDecoder decoder)
                          throws CharacterCodingException
```
    Reads a NUL-terminated string from this buffer using the specified decoder and returns it.
    
    参数:
    fieldSize - the maximum number of bytes to read
    
    抛出:
    
    CharacterCodingException
  - putString
```
public abstract IoBuffer putString(CharSequence val,
                 CharsetEncoder encoder)
                            throws CharacterCodingException
```
    Writes the content of in into this buffer using the specified encoder. This method doesn't terminate string with NUL. You have to do it by yourself.
    
    抛出:
    
    BufferOverflowException - if the specified string doesn't fit
    
    CharacterCodingException
  - putString
```
public abstract IoBuffer putString(CharSequence val,
                 int fieldSize,
                 CharsetEncoder encoder)
                            throws CharacterCodingException
```
    Writes the content of in into this buffer as a NUL-terminated string using the specified encoder.
    If the charset name of the encoder is UTF-16, you cannot specify odd fieldSize, and this method will append two NULs as a terminator.
    Please note that this method doesn't terminate with NUL if the input string is longer than fieldSize.
    
    参数:
    fieldSize - the maximum number of bytes to write
    
    抛出:
    
    CharacterCodingException
  - getPrefixedString
```
public abstract String getPrefixedString(CharsetDecoder decoder)
                                  throws CharacterCodingException
```
    Reads a string which has a 16-bit length field before the actual encoded string, using the specified decoder and returns it. This method is a shortcut for getPrefixedString(2, decoder).
    
    抛出:
    
    CharacterCodingException
  - getPrefixedString
```
public abstract String getPrefixedString(int prefixLength,
                       CharsetDecoder decoder)
                                  throws CharacterCodingException
```
    Reads a string which has a length field before the actual encoded string, using the specified decoder and returns it.
    
    参数:
    prefixLength - the length of the length field (1, 2, or 4)
    
    抛出:
    
    CharacterCodingException
  - putPrefixedString
```
public abstract IoBuffer putPrefixedString(CharSequence in,
                         CharsetEncoder encoder)
                                    throws CharacterCodingException
```
    Writes the content of in into this buffer as a string which has a 16-bit length field before the actual encoded string, using the specified encoder. This method is a shortcut for putPrefixedString(in, 2, 0, encoder).
    
    抛出:
    
    BufferOverflowException - if the specified string doesn't fit
    
    CharacterCodingException
  - putPrefixedString
```
public abstract IoBuffer putPrefixedString(CharSequence in,
                         int prefixLength,
                         CharsetEncoder encoder)
                                    throws CharacterCodingException
```
    Writes the content of in into this buffer as a string which has a 16-bit length field before the actual encoded string, using the specified encoder. This method is a shortcut for putPrefixedString(in, prefixLength, 0, encoder).
    
    参数:
    prefixLength - the length of the length field (1, 2, or 4)
    
    抛出:
    
    BufferOverflowException - if the specified string doesn't fit
    
    CharacterCodingException
  - putPrefixedString
```
public abstract IoBuffer putPrefixedString(CharSequence in,
                         int prefixLength,
                         int padding,
                         CharsetEncoder encoder)
                                    throws CharacterCodingException
```
    Writes the content of in into this buffer as a string which has a 16-bit length field before the actual encoded string, using the specified encoder. This method is a shortcut for putPrefixedString(in, prefixLength, padding, ( byte ) 0, encoder) .
    
    参数:
    prefixLength - the length of the length field (1, 2, or 4)
    padding - the number of padded NULs (1 (or 0), 2, or 4)
    
    抛出:
    
    BufferOverflowException - if the specified string doesn't fit
    
    CharacterCodingException
  - putPrefixedString
```
public abstract IoBuffer putPrefixedString(CharSequence val,
                         int prefixLength,
                         int padding,
                         byte padValue,
                         CharsetEncoder encoder)
                                    throws CharacterCodingException
```
    Writes the content of in into this buffer as a string which has a 16-bit length field before the actual encoded string, using the specified encoder.
    
    参数:
    prefixLength - the length of the length field (1, 2, or 4)
    padding - the number of padded bytes (1 (or 0), 2, or 4)
    padValue - the value of padded bytes
    
    抛出:
    
    BufferOverflowException - if the specified string doesn't fit
    
    CharacterCodingException
  - getObject
```
public abstract Object getObject()
                          throws ClassNotFoundException
```
    Reads a Java object from the buffer using the context ClassLoader of the current thread.
    
    抛出:
    
    ClassNotFoundException
  - getObject
```
public abstract Object getObject(ClassLoader classLoader)
                          throws ClassNotFoundException
```
    Reads a Java object from the buffer using the specified classLoader.
    
    抛出:
    
    ClassNotFoundException
  - putObject
```
public abstract IoBuffer putObject(Object o)
```
    Writes the specified Java object to the buffer.
  - prefixedDataAvailable
```
public abstract boolean prefixedDataAvailable(int prefixLength)
```
    Returns true if this buffer contains a data which has a data length as a prefix and the buffer has remaining data as enough as specified in the data length field. This method is identical with prefixedDataAvailable( prefixLength, Integer.MAX_VALUE ). Please not that using this method can allow DoS (Denial of Service) attack in case the remote peer sends too big data length value. It is recommended to use prefixedDataAvailable(int, int) instead.
    
    参数:
    prefixLength - the length of the prefix field (1, 2, or 4)
    
    抛出:
    
    IllegalArgumentException - if prefixLength is wrong
    
    BufferDataException - if data length is negative
  - prefixedDataAvailable
```
public abstract boolean prefixedDataAvailable(int prefixLength,
                            int maxDataLength)
```
    Returns true if this buffer contains a data which has a data length as a prefix and the buffer has remaining data as enough as specified in the data length field.
    
    参数:
    prefixLength - the length of the prefix field (1, 2, or 4)
    maxDataLength - the allowed maximum of the read data length
    
    抛出:
    
    IllegalArgumentException - if prefixLength is wrong
    
    BufferDataException - if data length is negative or greater then maxDataLength
  - indexOf
```
public abstract int indexOf(byte b)
```
    Returns the first occurence position of the specified byte from the current position to the current limit.
    
    返回:
    -1 if the specified byte is not found
  - skip
```
public abstract IoBuffer skip(int size)
```
    Forwards the position of this buffer as the specified size bytes.
  - fill
```
public abstract IoBuffer fill(byte value,
            int size)
```
    Fills this buffer with the specified value. This method moves buffer position forward.
  - fillAndReset
```
public abstract IoBuffer fillAndReset(byte value,
                    int size)
```
    Fills this buffer with the specified value. This method does not change buffer position.
  - fill
```
public abstract IoBuffer fill(int size)
```
    Fills this buffer with NUL (0x00). This method moves buffer position forward.
  - fillAndReset
```
public abstract IoBuffer fillAndReset(int size)
```
    Fills this buffer with NUL (0x00). This method does not change buffer position.
  - getEnum
```
public abstract <E extends Enum<E>> E getEnum(Class<E> enumClass)
```
    Reads a byte from the buffer and returns the correlating enum constant defined by the specified enum type.
    
    类型参数:
    E - The enum type to return
    参数:
    enumClass - The enum's class object
  - getEnum
```
public abstract <E extends Enum<E>> E getEnum(int index,
                            Class<E> enumClass)
```
    Reads a byte from the buffer and returns the correlating enum constant defined by the specified enum type.
    
    类型参数:
    E - The enum type to return
    参数:
    index - the index from which the byte will be read
    enumClass - The enum's class object
  - getEnumShort
```
public abstract <E extends Enum<E>> E getEnumShort(Class<E> enumClass)
```
    Reads a short from the buffer and returns the correlating enum constant defined by the specified enum type.
    
    类型参数:
    E - The enum type to return
    参数:
    enumClass - The enum's class object
  - getEnumShort
```
public abstract <E extends Enum<E>> E getEnumShort(int index,
                                 Class<E> enumClass)
```
    Reads a short from the buffer and returns the correlating enum constant defined by the specified enum type.
    
    类型参数:
    E - The enum type to return
    参数:
    index - the index from which the bytes will be read
    enumClass - The enum's class object
  - getEnumInt
```
public abstract <E extends Enum<E>> E getEnumInt(Class<E> enumClass)
```
    Reads an int from the buffer and returns the correlating enum constant defined by the specified enum type.
    
    类型参数:
    E - The enum type to return
    参数:
    enumClass - The enum's class object
  - getEnumInt
```
public abstract <E extends Enum<E>> E getEnumInt(int index,
                               Class<E> enumClass)
```
    Reads an int from the buffer and returns the correlating enum constant defined by the specified enum type.
    
    类型参数:
    E - The enum type to return
    参数:
    index - the index from which the bytes will be read
    enumClass - The enum's class object
  - putEnum
```
public abstract IoBuffer putEnum(Enum<?> e)
```
    Writes an enum's ordinal value to the buffer as a byte.
    
    参数:
    e - The enum to write to the buffer
  - putEnum
```
public abstract IoBuffer putEnum(int index,
               Enum<?> e)
```
    Writes an enum's ordinal value to the buffer as a byte.
    
    参数:
    index - The index at which the byte will be written
    e - The enum to write to the buffer
  - putEnumShort
```
public abstract IoBuffer putEnumShort(Enum<?> e)
```
    Writes an enum's ordinal value to the buffer as a short.
    
    参数:
    e - The enum to write to the buffer
  - putEnumShort
```
public abstract IoBuffer putEnumShort(int index,
                    Enum<?> e)
```
    Writes an enum's ordinal value to the buffer as a short.
    
    参数:
    index - The index at which the bytes will be written
    e - The enum to write to the buffer
  - putEnumInt
```
public abstract IoBuffer putEnumInt(Enum<?> e)
```
    Writes an enum's ordinal value to the buffer as an integer.
    
    参数:
    e - The enum to write to the buffer
  - putEnumInt
```
public abstract IoBuffer putEnumInt(int index,
                  Enum<?> e)
```
    Writes an enum's ordinal value to the buffer as an integer.
    
    参数:
    index - The index at which the bytes will be written
    e - The enum to write to the buffer
  - getEnumSet
```
public abstract <E extends Enum<E>> EnumSet<E> getEnumSet(Class<E> enumClass)
```
    Reads a byte sized bit vector and converts it to an EnumSet.
    Each bit is mapped to a value in the specified enum. The least significant bit maps to the first entry in the specified enum and each subsequent bit maps to each subsequent bit as mapped to the subsequent enum value.
    
    类型参数:
    E - the enum type
    参数:
    enumClass - the enum class used to create the EnumSet
    
    返回:
    the EnumSet representation of the bit vector
  - getEnumSet
```
public abstract <E extends Enum<E>> EnumSet<E> getEnumSet(int index,
                                        Class<E> enumClass)
```
    Reads a byte sized bit vector and converts it to an EnumSet.
    
    类型参数:
    E - the enum type
    参数:
    index - the index from which the byte will be read
    enumClass - the enum class used to create the EnumSet
    
    返回:
    the EnumSet representation of the bit vector
    另请参阅:
    getEnumSet(Class)
  - getEnumSetShort
```
public abstract <E extends Enum<E>> EnumSet<E> getEnumSetShort(Class<E> enumClass)
```
    Reads a short sized bit vector and converts it to an EnumSet.
    
    类型参数:
    E - the enum type
    参数:
    enumClass - the enum class used to create the EnumSet
    
    返回:
    the EnumSet representation of the bit vector
    另请参阅:
    getEnumSet(Class)
  - getEnumSetShort
```
public abstract <E extends Enum<E>> EnumSet<E> getEnumSetShort(int index,
                                             Class<E> enumClass)
```
    Reads a short sized bit vector and converts it to an EnumSet.
    
    类型参数:
    E - the enum type
    参数:
    index - the index from which the bytes will be read
    enumClass - the enum class used to create the EnumSet
    
    返回:
    the EnumSet representation of the bit vector
    另请参阅:
    getEnumSet(Class)
  - getEnumSetInt
```
public abstract <E extends Enum<E>> EnumSet<E> getEnumSetInt(Class<E> enumClass)
```
    Reads an int sized bit vector and converts it to an EnumSet.
    
    类型参数:
    E - the enum type
    参数:
    enumClass - the enum class used to create the EnumSet
    
    返回:
    the EnumSet representation of the bit vector
    另请参阅:
    getEnumSet(Class)
  - getEnumSetInt
```
public abstract <E extends Enum<E>> EnumSet<E> getEnumSetInt(int index,
                                           Class<E> enumClass)
```
    Reads an int sized bit vector and converts it to an EnumSet.
    
    类型参数:
    E - the enum type
    参数:
    index - the index from which the bytes will be read
    enumClass - the enum class used to create the EnumSet
    
    返回:
    the EnumSet representation of the bit vector
    另请参阅:
    getEnumSet(Class)
  - getEnumSetLong
```
public abstract <E extends Enum<E>> EnumSet<E> getEnumSetLong(Class<E> enumClass)
```
    Reads a long sized bit vector and converts it to an EnumSet.
    
    类型参数:
    E - the enum type
    参数:
    enumClass - the enum class used to create the EnumSet
    
    返回:
    the EnumSet representation of the bit vector
    另请参阅:
    getEnumSet(Class)
  - getEnumSetLong
```
public abstract <E extends Enum<E>> EnumSet<E> getEnumSetLong(int index,
                                            Class<E> enumClass)
```
    Reads a long sized bit vector and converts it to an EnumSet.
    
    类型参数:
    E - the enum type
    参数:
    index - the index from which the bytes will be read
    enumClass - the enum class used to create the EnumSet
    
    返回:
    the EnumSet representation of the bit vector
    另请参阅:
    getEnumSet(Class)
  - putEnumSet
```
public abstract <E extends Enum<E>> IoBuffer putEnumSet(Set<E> set)
```
    Writes the specified Set to the buffer as a byte sized bit vector.
    
    类型参数:
    E - the enum type of the Set
    参数:
    set - the enum set to write to the buffer
  - putEnumSet
```
public abstract <E extends Enum<E>> IoBuffer putEnumSet(int index,
                                      Set<E> set)
```
    Writes the specified Set to the buffer as a byte sized bit vector.
    
    类型参数:
    E - the enum type of the Set
    参数:
    index - the index at which the byte will be written
    set - the enum set to write to the buffer
  - putEnumSetShort
```
public abstract <E extends Enum<E>> IoBuffer putEnumSetShort(Set<E> set)
```
    Writes the specified Set to the buffer as a short sized bit vector.
    
    类型参数:
    E - the enum type of the Set
    参数:
    set - the enum set to write to the buffer
  - putEnumSetShort
```
public abstract <E extends Enum<E>> IoBuffer putEnumSetShort(int index,
                                           Set<E> set)
```
    Writes the specified Set to the buffer as a short sized bit vector.
    
    类型参数:
    E - the enum type of the Set
    参数:
    index - the index at which the bytes will be written
    set - the enum set to write to the buffer
  - putEnumSetInt
```
public abstract <E extends Enum<E>> IoBuffer putEnumSetInt(Set<E> set)
```
    Writes the specified Set to the buffer as an int sized bit vector.
    
    类型参数:
    E - the enum type of the Set
    参数:
    set - the enum set to write to the buffer
  - putEnumSetInt
```
public abstract <E extends Enum<E>> IoBuffer putEnumSetInt(int index,
                                         Set<E> set)
```
    Writes the specified Set to the buffer as an int sized bit vector.
    
    类型参数:
    E - the enum type of the Set
    参数:
    index - the index at which the bytes will be written
    set - the enum set to write to the buffer
  - putEnumSetLong
```
public abstract <E extends Enum<E>> IoBuffer putEnumSetLong(Set<E> set)
```
    Writes the specified Set to the buffer as a long sized bit vector.
    
    类型参数:
    E - the enum type of the Set
    参数:
    set - the enum set to write to the buffer
  - putEnumSetLong
```
public abstract <E extends Enum<E>> IoBuffer putEnumSetLong(int index,
                                          Set<E> set)
```
    Writes the specified Set to the buffer as a long sized bit vector.
    
    类型参数:
    E - the enum type of the Set
    参数:
    index - the index at which the bytes will be written
    set - the enum set to write to the buffer

类 IoBuffer

Allocation

Wrapping existing NIO buffers and arrays

AutoExpand

AutoShrink

Derived Buffers

Changing Buffer Allocation Policy

构造器概要

方法概要

从类继承的方法 java.lang.Object

从接口继承的方法 java.lang.Comparable

构造器详细资料

IoBuffer

方法详细资料

getAllocator

setAllocator

isUseDirectBuffer

setUseDirectBuffer

allocate

allocate

wrap

wrap

wrap

normalizeCapacity

free

buf

isDirect

isDerived

isReadOnly

minimumCapacity

minimumCapacity

capacity

capacity

isAutoExpand

setAutoExpand

isAutoShrink

setAutoShrink

expand

expand

shrink

position

position

limit

limit

mark

markValue

reset

clear

sweep

sweep

flip

rewind

remaining

hasRemaining

duplicate

slice

asReadOnlyBuffer

hasArray

array

arrayOffset

get

getUnsigned

put

get

getUnsigned

put

get

get

getSlice

getSlice

put

put

put

put

compact

order

order

getChar

putChar

getChar